12 Aug Cutting / Torch Cutting – JSA

Cutting / Torch Cutting Job Safety Analysis (JSA)

Job / Task

Oxy-fuel torch cutting and related hot-cutting activities, including work-area preparation, cylinder setup, regulator and hose connection, torch lighting, cutting, shutdown, slag removal, inspection, and cleanup.

Purpose

This Job Safety Analysis (JSA), also known as a Job Hazard Analysis (JHA), identifies hazards associated with cutting and torch cutting and establishes safe work practices and controls to prevent fires, explosions, burns, eye injuries, compressed-gas incidents, toxic fume exposure, and other hot-work-related injuries.

Personnel Qualifications

Torch cutting shall be performed only by trained and authorized employees who understand oxy-fuel equipment, compressed-gas hazards, hot-work requirements, fire prevention, ventilation, PPE, and emergency shutdown procedures.

Employees shall:

• Inspect cylinders, regulators, hoses, check valves, flashback arrestors where provided or required, torch body, tips, and connections before use.
• Identify the material, coatings, residues, and surrounding conditions before cutting.
• Obtain a hot-work permit when required by the site or hot-work program.
• Use adequate ventilation or respiratory protection when required by the exposure assessment.
• Remove or protect combustible materials and maintain required fire-watch coverage.
• Secure compressed-gas cylinders and protect them from heat, sparks, physical damage, and electrical circuits.
• Keep oxygen equipment free of oil, grease, and other petroleum contamination.
• Stop work when leaks, damaged equipment, inadequate ventilation, fire hazards, or unsafe atmospheric conditions are identified.

Required PPE

PPE shall be selected for the cutting operation, material, exposure, and work environment and may include:

• Cutting goggles, face shield, or other approved eye and face protection with the appropriate filter lens shade.
• Safety glasses with side protection.
• Flame-resistant gloves suitable for hot work.
• Flame-resistant clothing that covers exposed skin.
• Leather sleeves, apron, leggings, or other protective clothing where additional protection is needed.
• Safety footwear suitable for hot slag and construction hazards.
• Hearing protection where noise or hot-particle entry into the ear is a hazard.
• Respiratory protection when required by the respiratory hazard assessment and respiratory-protection program.
• Hard hat where overhead or construction hazards exist.
• Additional task-specific PPE identified by the hazard assessment.

Clothing shall be arranged to prevent sparks, molten metal, and slag from becoming trapped in cuffs, pockets, openings, or footwear.

JSA – Job Steps, Hazards, and Controls

Step 1 – Review the Cutting Task

Potential Hazards

• Unknown material or coating.
• Toxic fumes.
• Fire or explosion.
• Incorrect cutting method.

Required Controls

• Identify the material, thickness, coatings, residues, and intended cut before beginning.
• Review applicable SDS information and manufacturer instructions.
• Determine ventilation, respiratory protection, fire prevention, and PPE requirements.
• Evaluate whether the workpiece is hollow, enclosed, pressurized, or previously contained hazardous material.
• Do not cut materials of unknown composition when hazards cannot be adequately evaluated.

Step 2 – Inspect the Work Area

Potential Hazards

• Combustible materials.
• Flammable vapors or gases.
• Poor ventilation.
• Sparks traveling to other areas.

Required Controls

• Inspect the cutting area and adjacent spaces for combustibles, flammable liquids, gases, dusts, and other ignition hazards.
• Relocate combustibles at least the distance required by the hot-work program when practical, or protect them with suitable fire-resistant barriers or covers.
• Check floor openings, wall penetrations, cracks, and lower levels where sparks or molten metal could travel.
• Do not perform torch cutting where an explosive atmosphere may exist unless specifically controlled and authorized.
• Protect nearby employees and the public from sparks, slag, and hot metal.

Step 3 – Obtain Hot-Work Authorization

Potential Hazards

• Uncontrolled ignition source.
• Inadequate fire protection.
• Work in a prohibited location.

Required Controls

• Obtain the required hot-work permit before cutting where applicable.
• Verify all permit precautions have been completed.
• Ensure suitable fire-extinguishing equipment is immediately available.
• Assign a trained fire watch when required.
• Suspend work if permit conditions or required controls cannot be maintained.

Step 4 – Inspect and Position Cylinders

Potential Hazards

• Cylinder falling.
• Valve damage.
• Fire or explosion.
• Cylinder exposed to heat.

Required Controls

• Inspect cylinders for visible damage, leakage, or other unsafe conditions.
• Secure cylinders upright with approved chains, straps, or other suitable restraints.
• Keep cylinders away from sparks, slag, flame, excessive heat, and physical damage.
• Keep cylinders out of passageways and locations where they could be struck.
• Maintain required separation or approved fire barriers between oxygen and fuel-gas cylinders in storage.

Step 5 – Install Regulators and Connect Hoses

Potential Hazards

• Gas leak.
• Regulator failure.
• Incorrect gas connection.
• Fire or explosion.

Required Controls

• Use regulators, hoses, fittings, and equipment designed for the specific gas service.
• Inspect threads, fittings, hoses, and connections before assembly.
• Keep oxygen fittings and equipment free of oil and grease.
• Do not force incompatible connections or use unauthorized adapters.
• Route hoses to prevent damage from traffic, sharp edges, hot slag, and pinch points.

Step 6 – Check for Gas Leaks

Potential Hazards

• Fire.
• Explosion.
• Asphyxiation.
• Unexpected gas release.

Required Controls

• Check connections for leaks using an approved leak-detection method.
• Never use an open flame to check for leaks.
• Remove leaking equipment from service and correct the condition before use.
• Do not use damaged hoses, regulators, valves, or torches.
• Ventilate areas where leaking gas may have accumulated before work begins.

Step 7 – Purge and Light the Torch

Potential Hazards

• Flashback.
• Burns.
• Fire.
• Incorrect gas mixture.

Required Controls

• Follow manufacturer instructions for purging, pressure settings, and lighting sequence.
• Use an approved friction lighter or other manufacturer-approved ignition device; do not use matches or cigarette lighters.
• Point the torch away from personnel and combustible materials when lighting.
• Use check valves and flashback protection as required by the equipment design, manufacturer, or applicable procedure.
• If a backfire or flashback occurs, shut down the torch and inspect the system before reuse.

Step 8 – Perform Torch Cutting

Potential Hazards

• Burns.
• Flying sparks.
• Molten metal.
• Fire.
• Fumes and gases.

Required Controls

• Wear all required PPE before beginning the cut.
• Maintain control of the torch and keep the flame directed away from personnel, cylinders, hoses, and combustible materials.
• Position the body away from the path of molten metal and falling cut sections.
• Maintain ventilation and keep the breathing zone away from fumes.
• Continuously monitor the surrounding area for ignition, smoke, or changing conditions.
• Stop cutting immediately if unsafe equipment, fire, atmospheric, or ventilation conditions develop.

Step 9 – Control Falling or Moving Cut Material

Potential Hazards

• Struck-by injury.
• Crushing.
• Hot material.
• Unexpected structural movement.

Required Controls

• Evaluate how the material will move when the cut is completed.
• Support, brace, rig, or restrain material before cutting when necessary.
• Keep employees clear of the drop zone and pinch points.
• Use mechanical handling equipment for heavy or awkward pieces.
• Do not cut structural members until their function and required support have been evaluated.

Step 10 – Cut Painted, Coated, or Contaminated Material

Potential Hazards

• Toxic fumes.
• Metal fumes.
• Chemical decomposition products.
• Fire.

Required Controls

• Identify coatings or contaminants before cutting.
• Remove coatings from the heat-affected area when appropriate and safe to do so.
• Use local exhaust, mechanical ventilation, or respiratory protection as required by the hazard assessment.
• Follow special controls for materials containing lead, chromium, cadmium, galvanized coatings, or other hazardous substances.
• Stop work if unusual smoke, odors, symptoms, or unknown coatings are encountered.

Step 11 – Cut Containers, Tanks, or Piping

Potential Hazards

• Explosion.
• Fire.
• Toxic residue.
• Pressure release.

Required Controls

• Do not cut containers, tanks, drums, vessels, or piping that contained flammable, combustible, toxic, or reactive substances until they have been properly isolated, drained, cleaned, purged, tested, and authorized.
• Verify pressure has been relieved and hazardous connections isolated.
• Follow confined-space requirements when applicable.
• Continue atmospheric monitoring when required.
• Treat unknown containers and piping as hazardous until their previous contents and condition are established.

Step 12 – Perform Cutting in Confined or Enclosed Spaces

Potential Hazards

• Oxygen deficiency or enrichment.
• Toxic fumes.
• Fuel-gas accumulation.
• Fire.
• Difficult rescue.

Required Controls

• Follow the applicable confined-space program when required.
• Test and monitor the atmosphere as required.
• Provide adequate ventilation throughout cutting operations.
• Keep gas cylinders outside confined spaces unless specifically permitted and controlled.
• Remove torches and hoses or positively shut off gas supplies when work is suspended as required.
• Provide attendants and rescue provisions when applicable.

Step 13 – Pause or Temporarily Stop Cutting

Potential Hazards

• Torch accidentally igniting material.
• Gas leakage.
• Hot tip contact.

Required Controls

• Close torch valves in the proper sequence when pausing work as required by manufacturer instructions.
• Place the torch where it cannot contact combustibles or be damaged.
• Do not leave a lighted torch unattended.
• Protect hoses from hot metal and ongoing work activities.
• For extended interruptions, shut off cylinder valves and relieve system pressure as appropriate.

Step 14 – Shut Down the Torch and Gas Supply

Potential Hazards

• Gas release.
• Fire.
• Burns.
• Equipment damage.

Required Controls

• Shut down the torch using the manufacturer-recommended sequence.
• Close cylinder valves when work is complete.
• Relieve pressure from hoses and regulators as required and back out adjusting screws where appropriate.
• Do not force or overtighten cylinder valves.
• Allow torch tips and hot equipment to cool before handling or storage.

Step 15 – Remove Slag and Handle Cut Material

Potential Hazards

• Hot metal.
• Sharp edges.
• Flying particles.
• Burns.

Required Controls

• Treat all recently cut metal as hot until verified otherwise.
• Use tools rather than bare hands to move hot pieces.
• Wear eye and face protection when chipping, brushing, or grinding slag.
• Deburr or control sharp cut edges as needed.
• Mark, barricade, or otherwise identify hot material where others could contact it.

Step 16 – Complete Fire Watch and Cleanup

Potential Hazards

• Delayed ignition.
• Smoldering material.
• Hidden fire.
• Hot slag in waste.

Required Controls

• Maintain fire watch for the period required by the hot-work program and site conditions.
• Inspect lower levels, opposite sides of walls, concealed spaces, and adjacent areas for heat or smoldering material.
• Remove slag, scrap, electrode or tip debris, and combustible waste safely.
• Do not place hot metal or slag in combustible waste containers.
• Report fires, near misses, leaks, equipment defects, and unusual exposures.

General Safe Work Requirements

• Torch cutting shall be performed only by trained and authorized employees.
• A hot-work permit shall be obtained whenever required by the applicable hot-work program or site requirements.
• Combustible and flammable materials shall be removed, isolated, or protected from flame, sparks, slag, and heat.
• Suitable fire-extinguishing equipment shall be readily available, and a fire watch shall be provided when required.
• Compressed-gas cylinders shall be secured and protected from heat, sparks, physical damage, and electrical circuits.
• Oxygen equipment shall never be contaminated with oil or grease.
• Gas hoses, regulators, torches, and connections shall be inspected before use and removed from service when defective.
• Adequate ventilation shall be provided to control fumes and gases, and respiratory protection shall be used when required.
• Containers, tanks, piping, and equipment that contained hazardous substances shall not be cut until properly isolated, cleaned, purged, tested, and authorized.
• Work shall stop whenever gas leaks, fire hazards, atmospheric conditions, equipment defects, or ventilation hazards cannot be adequately controlled.

Training

Employees performing torch cutting shall receive training appropriate to the equipment and work performed. Training shall include oxy-fuel equipment setup, cylinder handling, regulator and hose inspection, leak detection, torch lighting and shutdown, flashback prevention, hot-work permits, fire prevention and fire-watch duties, PPE and filter-lens selection, ventilation and fume hazards, cutting coated materials, container and piping hazards, confined-space requirements, emergency response, and stop-work expectations.

References

• OSHA 29 CFR 1926 Subpart J – Welding and Cutting.
• OSHA 29 CFR 1926.350 – Gas Welding and Cutting.
• OSHA 29 CFR 1926.352 – Fire Prevention.
• OSHA 29 CFR 1926.353 – Ventilation and Protection in Welding, Cutting, and Heating.
• OSHA 29 CFR 1910 Subpart Q – Welding, Cutting, and Brazing, where applicable.
• OSHA 29 CFR 1910.134 – Respiratory Protection, where applicable.
• Applicable SDSs, manufacturer instructions, hot-work procedures, and site requirements.